.flexigrid div.fbutton .useradd {  
    background: url('../img/user_add.gif') no-repeat center left;
}
.flexigrid div.fbutton .delete {  
    background: url('../img/del.gif') no-repeat center left;
}
.flexigrid div.fbutton .useredit {  
    background: url('../img/user_edit.gif') no-repeat center left;
}
.flexigrid div.fbutton .userpass {  
    background: url('../img/clave.gif') no-repeat center left;
}
.flexigrid div.fbutton .usergroups {  
    background: url('../img/group_edit.gif') no-repeat center left;
}
.flexigrid div.fbutton .groupadd {  
    background: url('../img/group_add.gif') no-repeat center left;
}
.flexigrid div.fbutton .members {  
    background: url('../img/group_edit.gif') no-repeat center left;
}
.flexigrid div.fbutton .driveadd {  
    background: url('../img/drive_add.gif') no-repeat center left;
}
.flexigrid div.fbutton .groupgo {  
    background: url('../img/group_go.gif') no-repeat center left;
}